Horace Austin Warner "Haw" Tabor (November 26, 1830 – April 10, 1899), also known as The Bonanza King of Leadville and The Silver King, was an American prospector, businessman, and Republican politician. His success in Leadville, Colorado's silver mines made him one of the wealthiest men in Colorado. He purchased more mining enterprises throughout Colorado and the Southwestern United States, and he was a philanthropist. After the collapse in the silver market during the Panic of 1893, Tabor was financially devastated. He lost most of his holdings, and he labored in the mines. In his last year, he was the postmaster of Denver.